Heat-regulator.



No. 730,043. PATENTED JUNE 2 1903.

' w. PARKER.

HEAT REGULATOR. APPLIOATI'ON FILED 0019. 1902.

N0 MODEL.

WITNESSES: V Q INVENTO}? zaazzerza W2 7. V

' ATTORN 1 State of Iowa, have invented a new and Imdevice in which an even temperature is to be WALTER PARKER,

Patented June 2, 1903.

PATENT OFFICE.

OF NEOLA, IOWA.

1 H EAT-"REGU LATOR.

SPIEOIFIOATIONforming part of Letters Patent No. 730,043, dated une 2, 1903.

Application filed October 911902 To all whom it may concern:

Be it known that I, WALTER PARKER, a citizen of the United States, and a resident of Neola, in the county of Pottaw'attamie and proved Heat-Regulator, of which the following'is a full, clear, and exact description.

This invention relates to improvements in heat-regulators particularly adapted for use in connection with lamps in incubators or the like; and-the object is to provide a regulator of simple construction that will be very sensitive to changes in temperature and which may be easily attached to an incubator or other maintained.

I will describe a heat-regulator.embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a heat-regulator embodying my invention. Fig. 2 is a plan view thereof, andFig. 3 is a longitudinal section thereof.

The regulator comprises an outer tube 1, consisting of any suitable materiah-such, for instance, as glass or metal-'and this tube has an extension 2, which is arranged at an angle relatively to the horizontal portion. Ar-; ranged within the tube 1 is a compressible tube 3, consisting of soft rubber or the like, and extended from this tube 3 is a small tube 4, which is arranged in the portion 2 of the main tube. These several tubes are sealed at the ends, and are therefore air-tight. Extended forward from tube 1 is an arm 5, on which a balancing-weight 6 is adjustable. The tube 1 has trunnions 7 the said trunnions having bearings in lugs 8, attached to the floor or other portion of an incubator. The tube 1. is to be filled with alcohol or similar liquid, and the tube 3 is to be partially filled with mercury.

In the operation a slight rise in tempera- Serial No. 126A75-- (N0 model.)

ture will expand the alcohol in the main tube,

compressing the tube 3 and forcing a portion of the mercury into the tube 4. This will overbalance the forward end of the regulator, which will turn down the wick of the lamp or open a damper thereon. When the temperature lowers, the reverse action will take place that is, the cooling of the alcohol will permit the tube 3 to expand, which allows the mercury to flow back therein.

7 Having thus described my invention, I claim as new and desire tosecure by Letters Patent 1. Aheat-regulator comprisinga main tube having a-forward and upward projection, a liquid in said tube, a compressible tube in the main tube, a small tube extended from the compressible tube into the upward and forward projection of the main tube, and mercury in said compressible tube.

2. A heat-regulator comprising a main tube having an upwardly-inclined extension, the said tube being mounted to swing, alcohol in said tube, a compressible tube arranged in the body portion of the main tube, a tube ex tended from said compressible tube into the upward extension of the first-named tube,

mercury in said compressible tube, and the adjustable weight.

3. A heat-regulator comprising a hermetically sealed tube having one endinclined'relatively' to the bodylportion, alcohol'insaid tube, a flexible tube in the main tube,*atube extended from the flexible tube into the angular extension of the first-named tube, the said tubes being air-tight, mercury in the flexible tube, the adjustable balance-weight,'andbear ings inwhich the regulator is mounted .to swing. v

In testimonywhereof I have signed my name to this specification in the presence of two subscribing witnesses.

V WALTER PARKER. Witnesses: V

D. F. PERRY, A. F. MAMMEN. 

